<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>v-on指令基础</title>
</head>
<body>
    <!--2.html结构-->
  <div id="app">
 <input type="button" value="v-on指令" v-on:click="doIt">
 <input type="button" value="v-on简介" @click="doIt">
 <input type="button" value="双击事件" @dblclick="doIt">
 <h2 @click="changeFood">{{ food }}</h2>
  </div> 
  <!-- 开发环境版本，包含了有帮助的命令行警告--> 
  <script src="https://cdn.jsdelivr.net/npm/vue/dist/vue.js"></script>
  <script>
      //3.创建Vue实例
      var app=new Vue({
          el:"#app",
          data:{
              food:"西蓝花炒蛋"
          },
          methods:{
              doIt:function(){
                  alert("做It");
              },
              changeFood:function(){
                  this.food+="很好吃！"
              }
          },
      })
  </script>
</body>
</html>